Thank you for charing with us!!! This is a great idea.
I’m leaving in Africa and the need of reusing the plastic is enourms!!! So i started, as voluntaree, an atelier of recycling and on my web search for info your first blog appear.
For sure i’ll contact u for more info.
Thank you once again.
Sandra

I don’t know of a place where you can buy plastic yarn. You can make it yourself, though, by cutting plastic bags in strips and looping them together (instructions on my site). That’s the process I use.